they are similar in quite a few ways, i agree! tbh it would be nice if he or anyone else could help change her view on idols/idol music somehow someway

chiyo can get curious about his school/how it works/how the idol industry works in the utapri world... and i'm sure haruka will have to be brushed upon that way. maybe one day while he's modeling for her, she'll ask him questions during breaks between posing, and we can see how much he'll answer her?